nodejs設定服務端允許跨域

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//設定跨域訪問app.all(‘*‘, function(req, res, next) {    res.header("Access-Control-Allow-Origin", "*");    res.header("Access-Control-Allow-Headers", "X-Requested-With");    res.header("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS");    res.header("X-Powered-By", ‘ 3.2.1‘);    res.header("Content-Type", "application/json;charset=utf-8");    next();});

 

nodejs設定服務端允許跨域